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@henriquechehad
Created July 5, 2018 14:44
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Code:
============================================================
package main
import (
"log"
"sync"
"github.com/pkg/profile"
"golang.org/x/crypto/bcrypt"
)
func main() {
p := profile.Start(profile.MemProfile, profile.ProfilePath("."), profile.NoShutdownHook)
defer p.Stop()
var wg sync.WaitGroup
for i := 0; i <= 500; i++ {
wg.Add(1)
go func() {
defer wg.Done()
err := bcrypt.CompareHashAndPassword([]byte("$2a$10$Q1bGQ4ERi4Zj.slbReOjOu0/T.2MhLCX9ASvCQqfh1LgbdRLdO6o6"), []byte("12345678"))
if err != nil {
log.Printf("error on compare: %v", err)
}
}()
}
wg.Wait()
log.Printf("DONE")
}
============================================================
Results:
$ go tool pprof /Users/henriquechehad/go/src/github.com/henriquechehad/benchmark-bcrypt/benchmark-bcrypt /Users/henriquechehad/go/src/github.com/henriquechehad/benchmark-bcrypt/mem.pprof
File: benchmark-bcrypt
Type: inuse_space
Time: Jul 5, 2018 at 11:42am (BRT)
Entering interactive mode (type "help" for commands, "o" for options)
(pprof)
(pprof) top
Showing nodes accounting for 3740.70kB, 99.41% of 3763.08kB total
Dropped 3 nodes (cum <= 18.81kB)
Showing top 10 nodes out of 13
flat flat% sum% cum cum%
3424.02kB 90.99% 90.99% 3424.02kB 90.99% vendor/golang.org/x/crypto/blowfish.NewSaltedCipher /Users/henriquechehad/go/src/vendor/golang.org/x/crypto/blowfish/cipher.go
88.59kB 2.35% 93.34% 92.60kB 2.46% vendor/golang.org/x/crypto/bcrypt.(*hashed).Hash /Users/henriquechehad/go/src/vendor/golang.org/x/crypto/bcrypt/bcrypt.go
67.05kB 1.78% 95.13% 67.05kB 1.78% runtime.malg /usr/local/go/src/runtime/proc.go
64.42kB 1.71% 96.84% 64.42kB 1.71% vendor/golang.org/x/crypto/bcrypt.newFromHash /Users/henriquechehad/go/src/vendor/golang.org/x/crypto/bcrypt/bcrypt.go
36.28kB 0.96% 97.80% 3661.49kB 97.30% main.main.func1 /Users/henriquechehad/go/src/github.com/henriquechehad/benchmark-bcrypt/main.go
28.22kB 0.75% 98.55% 101.59kB 2.70% runtime.systemstack /usr/local/go/src/runtime/asm_amd64.s
28.11kB 0.75% 99.30% 28.11kB 0.75% vendor/golang.org/x/crypto/bcrypt.base64Encode /Users/henriquechehad/go/src/vendor/golang.org/x/crypto/bcrypt/base64.go
4.02kB 0.11% 99.41% 3468.19kB 92.16% vendor/golang.org/x/crypto/bcrypt.bcrypt /Users/henriquechehad/go/src/vendor/golang.org/x/crypto/bcrypt/bcrypt.go
0 0% 99.41% 101.59kB 2.70% runtime.mstart /usr/local/go/src/runtime/proc.go
0 0% 99.41% 73.37kB 1.95% runtime.newproc.func1 /usr/local/go/src/runtime/proc.go
(pprof)
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